#include "my_stdio.h"
#include <stdio.h>
#include <unistd.h>
#include <string.h>
int main()
{
    myFILE *fp = mfopen("./log.txt","a");
    if(fp == NULL)
    {
        return 1;
    }
    int cnt = 10;
    while(cnt)
    {
        char buffer[64];
        snprintf(buffer,sizeof(buffer),"hello message,number is : %d",cnt);
        cnt--;
        mfwrite(buffer,strlen(buffer),fp);
        sleep(1);
    }
    mfclose(fp);
    return 0;
}